Given that: a. v 2 = 5480, v = 288 and n = 64, find the variance
Question:
Given that:
a. Σv2 = 5480, Σv = 288 and n = 64, find the variance of v.
b. Σw2 = 4000, w̅ = 5.2 and n = 36, find the standard deviation of w.
c. Σx2f = 6120, Σf = 40 and the standard deviation of x is 12, find Σxf.
d. Σxf = 2800, Σf = 50 and the variance of x is 100, find Σx2f .
e. Σt2 = 193144, Σt = 2324 and that the standard deviation of t is 3, find the number of data values of t.
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Related Book For
Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook
ISBN: 9781108407304
1st Edition
Authors: Dean Chalmers, Julian Gilbey
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